Mixer.



' G. B. WHITNEY.

MIXER. APPLIUATIO FILED N0\.27,1908.

1,109,725. Patentedv sept. 8, 1914.

9 5 Figs;

@MIE l IML Nomefs PMMA un Mmm llrlm wAzmlrmm/v r l To Yalli/tahoe?, .mayconcern Be it known that Il, GEORGE v UNITED. OFFICE GEORGE E` WHITNEY,OEYONKEES, ZNEW YORK, AssIGNoEjro 'EEE INTERNATIONAL PAVEMENT OOMPANLOFHAE'IFOED, fcONNEOTIOUT,v a-OOEEOImrIoN OE QONNEO.`

i i Application filed November,

E. WHITNEY,

i' a citizen of the United,States,residing at Yonkers, in the county ofWestchester, State of New? York, `have `invented anlmprove.-

ment in Mixers, of which the following' de-` scrlption, 1n connectionwith the 'accompanyi ing drawings, 1s a specification, likeletters onthedrawings representing like parts.- .c

tributing and mixing finely.y divided' material. While it may be ofgeneral' applica! i.' united by tion, 'it isprimarilyfintended for usein the' manufacture of compressed asphalt paving blocks and tilesOrdinarily composed Jof ai.`

body material of crushed `orpulverized stone asphaltic or equivalentcement orbinder. c Inorder that the principlesof my invenltionmay bereadily understood,l havedisclosed asingle type or embodiment'thereof oim the 'accompanying drawings, 'wherein-v f 'Figure l is a plan viewvofanapparatus embodying myinvention; Fig. 2 a vertical. section upontheline 2`-2.of`-Fig. l; Fig. 3

is a detail illustrating one means of supportl! Ting the mixer framesand Fig. 4 represents amodied form of my invention'. Y f

` @The body `material and especiallytphejfinely divided materialcustomarily'j"em` ployed in the manufacture of asphaltum' 1 blocks andtiles varies to a considerable eX? tent in iineness,`but` this is notobjectionable, in fact is desirable provided the distribution of thecoarse andy fine material is uniform.'V at all times. This,y materialisusually dis# lcharged into binsv or"i'eceptacles from which itis 'drawnfor use. vlThe material as discharged, for instance intofthefbins, heapsup into conical l form beneath `the inletjfth'e" ner` material formingthe ,centerl of the"'conical"` 'massa-nd the coarser material runniiigdown` xthe'sides in all'directinsf-and to theksides of the bins orpiles. This results'l in a pracrtical separation of the finer andcoarserm'a-vl terial, so that thematerial drawn? from these vbins orpiles varies greatly, running either fine yor coarse according to the"part of the bin or pile that for the moment supplies the material. Theinevitable result of this condition is that the asphaltumblocks andtiles made from this body material arecomposed, some of coarse and someof iine ma-y terial, and hence do not wear similarly and are not ofthesame strengthas blocks where# TIOUT. i. v

V"1',r10,9','7:25,. x y l t' i l Specification of Letters raient,j'k

c inthe material grades kof fine' ness is evenly distributedthroughout.'` L y'The 'object of my invention is'to prevent theseparation of coarse and and the handling thereof@ i f i Referring `to*the-drawings, the i chute through which the materialis delivered. intothe bins is 'representedat l andfis preferablyy elongated, `thebinforreceptacle being indii .y This. invention relates to'means for dis-y fcated atQ. Beneath the mouth `of the'chute Lfine 'material y' Y i l,Ixplace a distributing*membernory shelf 3, ,y

preferably iatin crosssection. It may,

however, kbe triangular in certain cases, and

is soshownin this instance. v `The apex or ridge Lof the shelf ispreferablyalined cen-- trally of the :chute 1,so that the'lmaterialdischarged from the chute is `deflected in "oppo' site deviations downtheinclinedffaces 5, (i

Lof the shelf, or of therpile, if, a fiat shelf is f used. It is'apparent that if theshelfA 3 be substantially flat the materialisfpermitted to accumulate thereon in' heaps, down the i sides of whichthe coarser material slipsin fthe manneralready-described; f

Beneath the shelf E I preferablyprovide' one orrmore other 'distributingkshelves' of l lsuitable character,` and preferably fiat if the lshelfbe fiat, or triangular ifthat be tri-j angular. In the presentembodimentof mv invention' I' have representedthree other shelvesmountedv in frames, numbered respectively 7,18 andg9.,` The shelves'ofthe j various series are 'herein arrangedin eche-ek lon.`` `Theshel'ves10 ofthe `frame 7 receive the material from'the shelf 3 and inturndivide and deflect it in opposite directions in a series o f streamsupon the shelvesl of the" frame 8,from which it is delivered invan'increased number of divided stre'amsito the shelves 14: of'thel frame9,' which delivers it in a Istill greater numbery lof dividedv i streamsto and thoroughly distributes it over the larea'of the bin. 2. By thusinterrupting the'flow of the material, there ,isvno oppor-v tunityforthe'coarser `and finer particles to become segregated, and byl soplacing the ,Shelves asfoto divide the columns of materialdischargedjupon` them and deviating the divided columns in 'different'-Ydirections, u

herein `-`upon staggered shelves beneath, ,aA

uniform distribution of unseparated ,and

uniformy material isl obtained over." a very 4 large bin or otherarea'.l 1

nDependent upon the height of the coll umn of" thel'material deliveredthrough the atthe same time, moved inl an opposite directioii to theopposite extreme positions.; y

chute l, the material iiows with more or less force down the` sides 5and G of the frame 3. If it flows with less than the nor# mal force fromthe chute l, it will falll within the apices of the shelves or bars 10and hence would be distributed only by the inner faces thereof, unlessmeans are pro-I vided to prevent this. If, however, the material shouldflow with mor'e than the nor-y mal force, it would be discharged uponthev apices of the said bars 10, and hence would be distributed only `by"the outer slopingi faces thereof. The: result` in either case would bethe unequal distribution .of they material by the shelves or bars of.the sev-f eral frames. To prevent Ythis unequaldistribut-ion, due tounequal velocity of flow of the material, I impart a relative move-iInentto the chute 1 and the shelves on the: frames 7, S and 9.Preferably, I move thew framesto and fro beneath the shelf 3 lso as tovary constantly the positions ofthe shelves g moved farther out to catchmaterial thati n n bodiinent of my invention, I desireit to bev mayf-beflowing above the normal velocity.l

In other cases if the machine overshoots or a undershootsthe shelflOateit-her side of the shelf 3, it will be caught 'upon the.;

shelves next beneath, which preferably are,

Thus by maintaining` the several series of shelves constantly antL'oppositely in reciprocation, their positions are constantly changed frelative to each other, presenting at one 2 instant positions to receivematerial flowing at high velocity, andwatthe next instant ina-` tei-iaiflowing at lower velocities, the mate-j rial that overshootsorundershoots one shelf y being invariably caught and held by a shelfbeneath. The resultof this isin effect to present a plurality of-seriesof shelves which, `at all times, are capable of acting upon and properlycontrolling the flowing material, whether the latter flow' at a constantvelocityor at variable velocities. Any

suitable means may be employed for shift@ vertical shaft 25 mounted insuitableA bearings and driven from any suitable source. The operatingmechanism for the links 21 is preferably inclosed by a suitable casing26 having holes for the passage ofthe rods and preferably flexiblepacking diaphragins 27 preventing the contact of the pulverized andpowdered material with the worms andl worm wheels or other operatingmechanism.`

`Preferably the crank pin 22 for the frame 8 is oppositely positionedwith respect to the crank pins 7 and' 9, so that the frames are ing thematerial from a ring-like ltop shelf y"above and discharging it uponannular :frames beneath, `from which it .may be discharged, if desired,toy other suitable-frames. 4,Preferably these frames are also relativelyshifted ory gyratedl with respectl to each other. resented the frame28as gyiated by crank mechanism 29. `This may be accomplished in anysuitable-manner as, for example, by

connecting the crank mechanismby links 30 Herein for the purpose lIhaverepJ- sliding and oscillating in suitably mounted sleeves.

.Having thus described one type or eni-4 understood that althoughspecific terms 'are "eniployed they are usedin a generic anddescriptive. sense' and not for purposes of limitation', the scope ofthe invention being 'set lforth `in the yfollowing claims.

Claims: i

'downwardly increasing series of deflectors ,andmeansfor'movmg saidseries relatively to veach. other.

J2. A mixer for granular and ,pulveruljent materialcomprising incombination, a-plu-- iality of interrupting shelves-,arranged in echelonland meansto impart an oppositely substantially horizontal reciprocalmovement to the adjacent parallels of said 'echelon.

3. A mixer. comprising-,in combination a downwardly. increasing seriesof deflectors l f ioo 1. A mixer. comprising in combination ,ay

, Gop-iesof this patentmay bey obtained -foil rive cents each, by`addressingthe l Commissonerof Patents, v

Washington, D. C.

